2018年11月23日金曜日

開発環境

Head First Python 第2版 ―頭とからだで覚えるPythonの基本 (Paul Barry (著)、嶋田 健志 (監修)、木下 哲也 (翻訳)、オライリージャパン)の6章(データの格納と操作 - データをファイルに格納する)、エクササイズ(p. 259)を取り組んでみる。

コード(Emacs)

Python 3

from flask import Flask, render_template, request, escape
import vsearch

app = Flask(__name__)


def log_request(req: 'flask_request', res: str) -> None:
    with open('vsearch.log', 'a') as log:
        print(f'{dir(req)} {res}', file=log)


@app.route('/')
@app.route('/entry')
def entry_page() -> str:
    return render_template(
        'entry.html',
        the_title='Welcom to search4letters on the web!')


@app.route('/search4', methods=['POST'])
def do_search() -> str:
    phrase = request.form['phrase']
    letters = request.form['letters']
    results = str(vsearch.search4letters(phrase, letters))
    log_request(request, results)
    title = '検索結果'
    return render_template(
        'results.html',
        the_title=title,
        the_phrase=phrase,
        the_letters=letters,
        the_results=results)


@app.route('/viewlog')
def view_the_log() -> str:
    with open('vsearch.log') as log:
        contents = log.read()
    return escape(contents)


if __name__ == '__main__':
    app.run(debug=True)

入出力結果(Terminal, cmd(コマンドプロンプト)), Jupyter(IPython)、

$ python3 hello_flask.py
 * Serving Flask app "hello_flask" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 178-619-558
127.0.0.1 - - [23/Nov/2018 12:12:21] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [23/Nov/2018 12:12:21] "GET /static/hf.css HTTP/1.1" 404 -
127.0.0.1 - - [23/Nov/2018 12:12:21] "GET /favicon.ico HTTP/1.1" 404 -
127.0.0.1 - - [23/Nov/2018 12:12:54] "POST /search4 HTTP/1.1" 200 -
127.0.0.1 - - [23/Nov/2018 12:12:54] "GET /static/hf.css HTTP/1.1" 404 -
127.0.0.1 - - [23/Nov/2018 12:12:54] "GET /favicon.ico HTTP/1.1" 404 -
127.0.0.1 - - [23/Nov/2018 12:13:19] "POST /search4 HTTP/1.1" 200 -
127.0.0.1 - - [23/Nov/2018 12:13:19] "GET /static/hf.css HTTP/1.1" 404 -
127.0.0.1 - - [23/Nov/2018 12:13:30] "POST /search4 HTTP/1.1" 200 -
127.0.0.1 - - [23/Nov/2018 12:13:30] "GET /static/hf.css HTTP/1.1" 404 -
127.0.0.1 - - [23/Nov/2018 12:13:35] "GET /search4 HTTP/1.1" 405 -
127.0.0.1 - - [23/Nov/2018 12:13:36] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [23/Nov/2018 12:13:36] "GET /viewlog HTTP/1.1" 200 -
127.0.0.1 - - [23/Nov/2018 12:13:36] "GET /favicon.ico HTTP/1.1" 404 -
127.0.0.1 - - [23/Nov/2018 12:13:37] "GET /viewlog HTTP/1.1" 200 -
  C-c C-c$

HTML

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